What was the release date of a song by  Bae Su-ji that sold more than 1.3 million copies?
digitally on January 7 and later physically on January 14, 2016
-1
Section::::Abstract.
Dream (Suzy and Baekhyun song)
49251960
-1
Section::::Abstract.
Dream (Suzy and Baekhyun song)
49251960
-1
Section::::Abstract.
Dream (Suzy and Baekhyun song)
49251960
-1
Section::::Abstract.
Bae Suzy
31787888